£17k
+63%vs Mar 2024Active06535955Private limited companyMerthyr Tydfil
QUANTUM ES LIMITED
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
01
Summary
QUANTUM ES LIMITED is an active private limited company (company number 06535955) incorporated on 17 March 2008, registered in Merthyr Tydfil. Its registered activity is manufacture of engines and turbines, except aircraft, vehicle and cycle engines (SIC 28110). Latest small accounts cover the period ending 31 March 2025, showing net assets of £17k and cash of £40k, with 10 employees on average. Net assets rose 63% on the prior period (£11k).
Peer position · net assets
By net assets it sits in the upper half of 219 comparable companies in the UK (median £1,000, upper quartile £38k).
02
Key dates
- Incorporated
- 17 March 200818 yrs ago
- Next accounts due
- 31 December 2026in 70 days
- Confirmation statement due
- 31 March 2027in 160 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
03
Activity
- SIC 28110
- Manufacture of engines and turbines, except aircraft, vehicle and cycle engines
- Accounts type
- Small
- Size band
- MicroCompanies Act thresholds
04
Financials
£40k
vs Mar 2024Not reported
10
−9%vs Mar 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £17k | £40k | £748k | — | — | — | 10 |
| 31 March 2024 | £11k | £0 | £135k | — | — | — | 11 |
Cash per employee£4,037Cash ÷ average employees
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
05
Filing and accounts signals
- Net assets above zeroNet assets £17,173 at 31 March 2025
- Net assets up 10% or more on the prior period+62.9% vs prior period
- Incorporated five or more years agoIncorporated 17 March 2008
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
06
Ownership and control
- Mr Simon Charles O'Sullivan
- has significant influence or control
- Mr Ralph Medora
- owns 75–100% of shares
- has significant influence or control
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
07
Timeline
- Confirmation statement duein 160 days
- Next accounts duein 70 days
- Accounts period endNet assets £17k · small accounts
- Accounts period endNet assets £11k · small accounts
- Incorporated
08
Similar companies in Cardiff
09
Reminders for QUANTUM ES LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.